9949687398 has 96 divisors (see below), whose sum is σ = 25524774912. Its totient is φ = 2741040000.

The previous prime is 9949687379. The next prime is 9949687411. The reversal of 9949687398 is 8937869499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1100898 + ... + 1109898.

It is an arithmetic number, because the mean of its divisors is an integer number (265883072).

Almost surely, 2^9949687398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9949687398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12762387456).

9949687398 is an abundant number, since it is smaller than the sum of its proper divisors (15575087514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9949687398 is a wasteful number, since it uses less digits than its factorization.

9949687398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9330 (or 9327 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The square root of 9949687398 is about 99748.1197717531. The cubic root of 9949687398 is about 2150.8154395950.

The spelling of 9949687398 in words is "nine billion, nine hundred forty-nine million, six hundred eighty-seven thousand, three hundred ninety-eight".